Water-washable toilet

Abstract

To provide a flush toilet that offers users aesthetic appeal and a sense of luxury while suppressing an increase in weight. [Solution] The present invention relates to a ceramic flush toilet (1), comprising a bowl portion (2), a drain trap pipe (4) extending backward from the lower part of the bowl portion, a rim portion (5) provided at the upper end of the bowl portion, and a skirt portion (8) integrally provided below the rim portion, extending backward from the front end of the rim portion and covering the bowl portion and the drain trap pipe from the outside, wherein the skirt portion extends upward from the floor surface, and at least in part, its upper end extends inward from the outer circumference (5e) of the rim portion.

Description

Technical Field

[0001] The present invention relates to a flush toilet, and more particularly to a flush toilet made of pottery.

Background Art

[0002] Japanese Patent Application Laid-Open No. 2013-44179 (Patent Document 1) describes a flush toilet. This flush toilet includes a bowl part, a rim part provided at the upper end of the bowl part, and a drain trap pipe extending rearward from the bowl part. And a skirt part made of pottery is provided so as to cover the outside of the bowl part.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the flush toilet described in Patent Document 1, although the front part of the bowl part is covered with the skirt part, the skirt part is not provided in the part from the rear part of the bowl part to the drain trap pipe, and the user can visually recognize the structure of the drain trap pipe. Therefore, it is not possible to provide the user with excellent aesthetics and a sense of luxury. On the other hand, there is also a type of flush toilet in which a skirt part is provided up to the rear part of the flush toilet to cover the bowl part and the drain trap pipe, but such a flush toilet has a problem that it becomes larger in size and heavier as it becomes larger. [[ID=三十六]]

[0005] Therefore, an object of the present invention is to provide a flush toilet that can suppress an increase in weight while providing the user with aesthetics and a sense of luxury.

Means for Solving the Problems

[0006] To solve the above-mentioned problems, the present invention provides a ceramic flush toilet comprising: a bowl portion; a drain trap pipe extending backward from the lower part of the bowl portion; a rim portion provided at the upper end of the bowl portion; and a skirt portion integrally provided below the rim portion, extending backward from the front end of the rim portion and covering the bowl portion and the drain trap pipe from the outside, wherein the skirt portion extends upward from the floor surface, and at least in part, its upper end extends inward from the outer circumference of the rim portion.

[0007] With the present invention configured in this way, the skirt portion is provided so as to cover the bowl portion and the drain trap pipe from the outside, thus concealing the outside of the bowl portion and the drain trap pipe, providing the user with an aesthetic and luxurious feel. Furthermore, with the present invention configured as described above, the skirt portion extends upward from the floor surface, and at least in part, the upper end is configured to extend inward beyond the outer circumference of the rim portion, so the skirt portion can be made compact, and an increase in the weight of the flush toilet can be suppressed.

[0008] In the present invention, preferably, the skirt portion is formed such that its upper end is connected to the outer circumference of the rim portion in the portion that covers the front of the bowl portion, while in the portion that covers the rear of the bowl portion, its upper end extends inward from the outer circumference of the rim portion.

[0009] With the present invention configured in this way, in the portion where the skirt portion covers the front of the bowl portion, the upper end of the skirt portion is formed to be connected to the outer circumference of the rim portion, so that a shelf portion for directing flushing water into the inside of the bowl portion can be constructed, ensuring sufficient flushing performance of the bowl portion. On the other hand, in the portion where the skirt portion covers the rear of the bowl portion, the upper end of the skirt portion extends inward beyond the outer circumference of the rim portion, so that the skirt portion can be made compact, and an increase in the weight of the flush toilet can be suppressed.

[0010] In the present invention, preferably, the upper end of the skirt portion is connected to the rim portion even in the portion where its upper end extends inward beyond the outer circumference of the rim portion.

[0011] According to the present invention configured in this way, even in the portion where the upper end of the skirt extends inward beyond the outer circumference of the rim, the upper end of the skirt is connected to the rim. Therefore, the rim can be supported by the skirt at the rear of the flush toilet, and distortion of the rim during the manufacturing process before firing the flush toilet can be suppressed.

[0012] In the present invention, preferably, the skirt portion is configured to form a space between itself and the drain trap pipe in the portion that covers the area behind the rear of the bowl portion.

[0013] With the present invention configured in this way, the skirt portion is configured to form a space between it and the drain trap pipe, so that accessories for the flush toilet can be stored in the space behind the bowl portion, making the appearance of the flush toilet neater.

[0014] In the present invention, preferably, the skirt portion is composed of a single wall surface separated from the bowl portion and the drain trap pipe.

[0015] According to the present invention configured in this way, since the skirt portion is made up of a single wall surface separated from the bowl portion and the drain trap pipe, the rim portion can be firmly supported from below, and the weight of the flush toilet can be reduced. [Effects of the Invention]

[0016] According to the present invention, the flush toilet can provide users with an aesthetically pleasing and luxurious feel while suppressing an increase in weight. [Brief explanation of the drawing]

[0017] [Figure 1] This is a perspective view of a flush toilet according to an embodiment of the invention. [Figure 2] The top view of the water flushing toilet according to an embodiment of the present invention. [Figure 3] The side sectional view of the water flushing toilet according to an embodiment of the present invention. [Figure 4] The rear view of the water flushing toilet according to an embodiment of the present invention. [Figure 5] The sectional view taken along the line V-V of FIG. 2 in the water flushing toilet according to an embodiment of the present invention. [Figure 6] The sectional view taken along the line VI-VI of FIG. 2 in the water flushing toilet according to an embodiment of the present invention. [Figure 7] The figure showing a modified embodiment of the present invention, and showing the section at the position of the line VI-VI of FIG. 2.

Mode for Carrying Out the Invention

[0018] Next, referring to the accompanying drawings, a water flushing toilet according to an embodiment of the present invention will be described. FIG. 1 is a perspective view of the water flushing toilet according to an embodiment of the present invention. FIG. 2 is the top view of the water flushing toilet according to an embodiment of the present invention. FIG. 3 is the side sectional view of the water flushing toilet according to an embodiment of the present invention.

[0019] As shown in FIG. 1, the water flushing toilet 1 according to an embodiment of the present invention includes a bowl portion 2, a drain trap pipe 4 (FIG. 3) extending from the lower part of the bowl portion 2, and a rim portion 5 provided at the upper end of the bowl portion of the bowl portion 2. Further, a washing water tank 6 is placed behind the bowl portion 2 of the water flushing toilet 1, and washing water for washing the bowl portion 2 is stored in the washing water tank 6. That is, the water flushing toilet 1 of the present embodiment is a two-piece type water flushing toilet having a ceramic washing water tank placed at the rear. Further, a skirt portion 8 is integrally provided below the rim portion 5 of the water flushing toilet 1 so as to cover the bowl portion 2 and the drain trap pipe 4 from the outside. This skirt portion 8 extends from the front end of the rim portion 5 toward the rear.

[0020] The flushing toilet 1 of this embodiment is configured such that by operating a lever handle 6a provided on the side surface of a flushing water tank 6, the flushing water stored in the flushing water tank 6 is discharged into a bowl portion 2 of the flushing toilet 1, and the bowl portion 2 is washed.

[0021] As shown in FIGS. 2 and 3, the bowl portion 2 is a mortar-shaped recess formed on the upper surface of the flushing toilet 1, and its surface constitutes a dirt receiving surface for receiving dirt. Further, a rim portion 5 is provided at the upper portion of the bowl portion 2, and the rim portion 5 is provided with a shelf portion 5a for guiding the flushing water, an overhang portion 5b formed so as to project upward of the shelf portion 5a toward the inner circumference of the bowl portion 2, a second rim water discharge port 5c for discharging the flushing water, and a first rim water discharge port 5d. Furthermore, a jet water discharge port 2a is provided at the bottom of the bowl portion 2 so as to face the inlet of the drain trap pipe 4.

[0022] The shelf portion 5a is a shelf-shaped water guide path provided on the outer circumference of the upper end portion of the bowl portion 2 and is provided on the rim portion 5 at the upper end of the bowl portion 2. That is, the shelf portion 5a is a surface having a predetermined width formed at a substantially horizontal inclination angle provided on the rim portion 5, and the flushing water can be guided along this shelf portion 5a.

[0023] The overhang portion 5b is a portion provided above the shelf portion 5a so as to cover at least a part of the shelf portion 5a, and is formed so as to project toward the inner circumference of the bowl portion 2. The overhang portion 5b prevents the flushing water guided by the shelf portion 5a from spilling out.

[0024] The second rim water discharge port 5c is a water discharge port provided at the upper right rear portion of the bowl portion 2, and discharges the flushing water onto the shelf portion 5a. The flushing water discharged from the second rim water discharge port 5c forms a counterclockwise swirling flow in the bowl portion 2 while being guided by the shelf portion 5a. That is, the flushing water is guided by the shelf portion 5a, swirls while flowing down little by little, and washes the surface of the bowl portion 2.

[0025] The first rim outlet 5d is an outlet located on the left side of the upper part of the bowl section 2, and discharges cleaning water onto the shelf section 5a. The cleaning water discharged from the first rim outlet 5d is guided by the shelf section 5a and forms a counterclockwise swirling flow within the bowl section 2. The number and arrangement of the rim outlets and the direction of the swirling flow formed can be changed as appropriate.

[0026] The jet nozzle 2a is located at the bottom of the bowl 2 so as to discharge flushing water toward the rear of the toilet bowl 1. By discharging flushing water from the jet nozzle 2a, the water and waste in the bowl 2 are pushed into the drain trap pipe 4, inducing a siphon effect within the drain trap pipe 4. The jet nozzle 2a can be omitted, and the present invention can also be applied to toilets that do not generate a siphon effect.

[0027] Furthermore, the flushing water in the flushing water tank 6 is supplied to the first rim outlet 5c, the second rim outlet 5d, and the jet outlet 2a, respectively, via a water conduit formed inside the flush toilet bowl 1.

[0028] As shown in Figure 2, the drain trap pipe 4 is a conduit that extends from the bottom of the bowl section 2 toward the rear, and consists of an upward conduit 4a that communicates with the bowl section 2, a downward conduit 4b provided downstream of the upward conduit 4a, and a top section 4c provided between the upward conduit 4a and the downward conduit 4b.

[0029] The rising pipe 4a is a pipe that extends diagonally upward from an inlet connected to the bowl section 2 towards the rear of the flush toilet 1. The inlet of the rising pipe 4a is positioned opposite the jet outlet 2a.

[0030] The descending pipeline 4b is a pipeline connected to the downstream side of the ascending pipeline 4a, and extends downward and backward from the top 4c. A drainage pipe (not shown) is connected to the downstream side of this descending pipeline 4b.

[0031] The top 4c is the highest part of the drain trap pipe 4, located between the rising pipe 4a and the descending pipe 4b. The height of this top 4c determines the water level in the bowl section 2, and the water seals the drain trap pipe 4.

[0032] The flushing water tank 6 is a tank that stores flushing water for cleaning the bowl section 2, and by opening and closing a drain valve (not shown) located inside, the discharge of flushing water from the flushing water tank 6 can be switched on and off. In this embodiment, the entire amount of flushing water is supplied from the flushing water tank 6, but the present invention can also be applied to flush toilets of a type that does not have a flushing water tank, or to flush toilets of a type in which a portion of the flushing water is supplied directly from the water supply.

[0033] Next, with reference to Figures 4 to 6, the configuration of the skirt portion 8 of the flush toilet 1 will be explained. Figure 4 is a rear view of a flush toilet according to an embodiment of the present invention. Figure 5 is a cross-sectional view along line VV in Figure 2. Figure 6 is a cross-sectional view along line VI-VI in Figure 2.

[0034] As shown in Figure 1, the skirt portion 8 of the flush toilet 1 is integrally formed of ceramic so as to cover the bowl portion 2 and the drain trap pipe 4 from the outside. The skirt portion 8 extends upward from the floor surface on which the flush toilet 1 is installed to the rim portion 5. In the region from the front end of the flush toilet 1 to the rear of the bowl portion 2, the upper end of the skirt portion 8 smoothly connects to the outer circumference 5e of the rim portion 5. Furthermore, in the region behind the bowl portion 2, the upper end of the skirt portion 8 is configured to extend inward beyond the outer circumference 5e of the rim portion 5.

[0035] That is, as shown in Figures 1, 4, and 5, the front skirt portion 8b, which extends from the front end of the flush toilet bowl 1 to the stepped portion 8a of the skirt portion 8, has its upper end smoothly connected to the outer circumference 5e of the rim portion 5. In this way, in the portion of the skirt portion 8 whose upper end covers the front of the bowl portion 2 (front skirt portion 8b), the skirt portion 8 is formed to be continuous with the outer circumference 5e of the rim portion 5.

[0036] Furthermore, as shown in Figure 5, the front skirt portion 8b, which is smoothly connected to the outer circumference 5e of the rim portion 5, extends to enclose the outside of the bowl portion 2. The front skirt portion 8b is made of a single wall surface that is separate from the wall surface that makes up the bowl portion 2. In this way, since the front skirt portion 8b, which is configured to cover the bowl portion 2 from the outside, is made of a single wall surface that is separate from the bowl portion 2, the flush toilet 1 is lighter compared to when the front skirt portion 8b is made of a thick wall surface that is integrated with the bowl portion 2.

[0037] On the other hand, as shown in Figures 4 and 6, the rear skirt portion 8c, located behind the stepped portion 8a, extends inward beyond the outer circumference 5e of the rim portion 5 at its upper end, creating a step between the upper end of the rear skirt portion 8c and the outer circumference 5e of the rim portion 5. Therefore, the rear skirt portion 8c, which is part of the skirt portion 8, extends inward beyond the outer circumference 5e of the rim portion 5 at its upper end. In other words, in the portion of the skirt portion 8 that covers the area behind the rear of the bowl portion 2 (rear skirt portion 8c), the upper end of the skirt portion 8 extends inward beyond the outer circumference of the rim portion 5. By extending a part of the skirt portion 8 inward beyond the outer circumference 5e of the rim portion 5 in this way, the skirt portion 8 can be made compact, and the weight increase of the flush toilet 1 is suppressed.

[0038] Furthermore, as shown in Figure 1, the front skirt portion 8b has a constricted portion 8d at its middle height, and the skirt portion 8 is narrowest at the constricted portion 8d. That is, as shown in Figure 4, the front skirt portion 8b extends from its upper end, which smoothly connects with the outer circumference 5e of the rim portion 5, to the constricted portion 8d, narrowing as it goes, and below the constricted portion 8d, it extends in a way that widens downwards. In this way, the front skirt portion 8b is formed to compactly wrap around the outside of the bowl portion 2.

[0039] On the other hand, as shown in Figure 4, the rear skirt portion 8c behind the stepped portion 8a is narrower in width up to above the constricted portion 8d provided on the front skirt portion 8b, and the upper end of the rear skirt portion 8c is connected to the rim portion 5 inside the outer circumference 5e. Also, as shown in Figure 1, in the region below the constricted portion 8d, the front skirt portion 8b and the rear skirt portion 8c are smoothly connected to form the same plane.

[0040] In this way, by connecting the upper end of the rear skirt portion 8c to the rim portion 5 inside the outer circumference 5e, the rear skirt portion 8c becomes more compact, and the weight of the components constituting it is reduced. Furthermore, the upper end of the skirt portion 8 is also connected to the rim portion 5 in the portion where the upper end of the skirt portion 8 extends inward beyond the outer circumference 5e of the rim portion 5 (rear skirt portion 8c). Therefore, the rim portion 5 can be supported by the skirt portion 8 even behind the bowl portion 2, and distortion of the rim portion 5 during the manufacturing process before firing the flush toilet 1 can be suppressed.

[0041] Furthermore, as shown in Figures 4 and 6, the rear skirt portion 8c is located on both sides of the drain trap pipe 4 that extends rearward from the bowl portion 2 of the flush toilet 1, covering most of the drain trap pipe 4 from the side, so that the drain trap pipe 4 is not substantially visible to the user. This gives the flush toilet 1 a high-class appearance. In addition, the skirt portion 8 is configured to form a space 10 between it and the drain trap pipe 4 in the portion that covers the rear of the bowl portion 2 (rear skirt portion 8c). That is, the rear skirt portion 8c, which is part of the skirt portion 8, is made up of a single wall surface that is separated from the drain trap pipe 4.

[0042] Furthermore, the space 10 formed between the rear skirt portion 8c and the drain trap pipe 4 can accommodate accessories (not shown) for the flush toilet 1. For example, by storing accessories such as the water supply pipe and power cord (not shown) connected to the local flushing device (not shown) installed on top of the bowl portion 2 in the space 10 between the rear skirt portion 8c and the drain trap pipe 4, the appearance of the flush toilet 1 becomes neater. In addition, since the rear skirt portion 8c is made up of a single wall surface separated from the drain trap pipe 4, the rim portion 5 can be firmly supported from below. Moreover, compared to the case where the rear skirt portion 8c is formed integrally with the drain trap pipe 4, the amount of material constituting the rear skirt portion 8c can be reduced, making the flush toilet 1 lighter.

[0043] In the flush toilet 1 of this embodiment of the present invention, the skirt portion 8 is provided so as to cover the bowl portion 2 and the drain trap pipe 4 from the outside, so the outside of the bowl portion 2 and the drain trap pipe 4 can be concealed, providing the user with an aesthetic and luxurious feel. Furthermore, in the flush toilet 1 of this embodiment, the skirt portion 8 extends upward from the floor surface, and at least in part, the upper end is configured to extend inward beyond the outer circumference 5e of the rim portion 5, so the skirt portion 8 can be made compact, and an increase in the weight of the flush toilet 1 can be suppressed.

[0044] Furthermore, in the flush toilet 1 of this embodiment, in the portion of the skirt portion 8 that covers the front of the bowl portion 2 (front skirt portion 8b), the upper end of the skirt portion 8 is formed to be connected to the outer circumference 5e of the rim portion 5, so that a shelf portion 5a for directing flushing water into the inside of the bowl portion 2 can be constructed, ensuring sufficient flushing performance of the bowl portion 2. On the other hand, in the portion of the skirt portion 8 that covers the area behind the rear of the bowl portion 2 (rear skirt portion 8c), the upper end of the skirt portion 8 extends inward beyond the outer circumference 5e of the rim portion 5, so that the skirt portion 8 can be made compact, and an increase in the weight of the flush toilet 1 can be suppressed.

[0045] Furthermore, in the flush toilet 1 of this embodiment, the upper end of the skirt portion 8 is connected to the rim portion 5 even in the portion where the upper end of the skirt portion 8 extends inward beyond the outer circumference 5e of the rim portion 5 (rear skirt portion 8c). Therefore, the rim portion 5 can be supported by the skirt portion 8 at the rear of the flush toilet 1, and distortion of the rim portion 5 during the manufacturing process before firing the flush toilet 1 can be suppressed.

[0046] Furthermore, according to the flush toilet 1 of this embodiment, the skirt portion 8 is configured to form a space 10 (Figures 4 and 6) between it and the drain trap pipe 4, so that accessories for the flush toilet 1 can be stored in this space 10 behind the bowl portion 2, making the appearance of the flush toilet 1 neater.

[0047] Furthermore, according to the flush toilet 1 of this embodiment, the skirt portion 8 is composed of a single wall surface separated from the bowl portion 2 and the drain trap pipe 4 (Figures 4 to 6), so that the rim portion 5 can be firmly supported from below, and the flush toilet 1 can be made lighter.

[0048] Although embodiments of the present invention have been described above, various modifications can be made to the embodiments described above. In particular, in the embodiments described above, the upper end of the rear skirt portion 8c extended inward beyond the outer circumference 5e of the rim portion 5 and was connected to the rim portion 5 (Figure 6). In contrast, as a modified example, the upper end of the skirt portion 8 does not need to be connected to the rim portion 5.

[0049] Figure 7 shows a modified embodiment of the present invention, illustrating a cross-section at the position of line VI-VI in Figure 2. As shown in Figure 7, the skirt portion 8 extending inward from the outer circumference 5e of the rim portion 5 does not need to be connected to the rim portion 5, and a gap 12 may exist between the upper end of the skirt portion 8 and the rim portion 5. In this way, even when a gap 12 exists between the upper end of the skirt portion 8 and the rim portion 5, the drain trap pipe 4 can be substantially concealed, and a highly aesthetically pleasing flush toilet can be provided.

[0050] Furthermore, in the embodiments described above, a constricted portion 8d was provided in the skirt portion 8, but the constricted portion 8d is not required, and the present invention can be configured so that the entire skirt portion 8 is inclined in the same direction. Also, in the embodiments described above, the present invention was applied to a flush toilet in which a rim spout and a jet spout are provided in the bowl portion, and the bowl portion is cleaned by the flushing water discharged from these spouts, but the present invention can be applied to any flush toilet with any flushing method. Also, in the embodiments described above, the entire amount of flushing water used for flushing was supplied from a flushing water tank, but the present invention can also be applied to a flush toilet in which, for example, some of the flushing water is supplied directly from the water supply. [Explanation of Symbols]

[0051] 1 flush toilet 2 Bowl section 2a Jet nozzle 4. Drain trap pipe 4a Ascent pipeline 4b downhill pipe 4c top 5. Rim section 5a Shelf 5b Overhang section 5c Second rim outlet 5d First rim outlet 5e Outer perimeter 6. Washing water tank 6a Lever handle 8 Skirt section 8a Stepped section 8b Front skirt section 8c Rear skirt section 8d Constriction 10 Space 12 gaps

Claims

1. It is a ceramic flush toilet, The bowl part, A drain trap pipe extends from the bottom of this bowl towards the rear, A rim portion is provided at the upper end of the bowl portion, Below this rim portion, a skirt portion is integrally provided, extending from the front end of the rim portion toward the rear, and covering the bowl portion and the drain trap pipe from the outside. It has, A flush toilet characterized in that the skirt portion extends upward from the floor surface, and at least in part, its upper end extends inward from the outer circumference of the rim portion.

2. The flush toilet according to claim 1, wherein the skirt portion is configured such that, in the portion covering the front of the bowl portion, its upper end is connected to the outer circumference of the rim portion, while in the portion covering the rear of the bowl portion, its upper end extends inward from the outer circumference of the rim portion.

3. The toilet bowl according to claim 1, wherein the upper end of the skirt portion is connected to the rim portion even in the portion where the upper end extends inward from the outer circumference of the rim portion.

4. The toilet flushing bowl according to claim 3, wherein the skirt portion is configured to form a space between itself and the drain trap pipe in the portion that covers the rear of the bowl portion.

5. The toilet flush according to claim 1, wherein the skirt portion is composed of a single wall surface separated from the bowl portion and the drain trap pipe.

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